Digital HVAC Manifold w Thermocouple - Mastercool

The Mastercool 99661-A Digital HVAC Manifold with Thermocouple is a professional-grade 2-way digital gauge set designed for precise diagnostics and efficient service of automotive A/C and general HVAC/R systems. Engineered for technicians, this manifold streamlines crucial tasks from accurate charging and thorough evacuation to comprehensive performance verification, integrating multi-refrigerant support and automatic superheat/subcool calculations. Its robust construction ensures reliable performance in demanding shop and field environments.

Key Features

• Comprehensive Digital Readout: A large, backlit LCD simultaneously displays system pressures, saturated and actual line temperatures, and calculated superheat/subcooling for rapid, at-a-glance system analysis.
• Extensive Refrigerant Compatibility: Pre-programmed with data for over 60 refrigerants, including R12, R22, R134a, R404A, R407C, R410A, R507A, and R744 (CO2), supporting a wide array of equipment.
• Automated Superheat & Subcooling: The included clamp-on thermocouple automatically calculates and displays superheat or subcooling values, reducing manual computations and improving diagnostic accuracy.
• Precise Deep Vacuum Measurement: An external vacuum sensor with a dedicated cable provides accurate micron readings, essential for verifying thorough system evacuation and preventing contamination before charging.
• Durable, Jobsite-Ready Construction: Built with a durable ABS body, a protective rubber boot, and robust 1/4" M-flare connections, this manifold is designed to withstand daily professional use. It includes a blow-molded case for secure transport.

Applications

• Automotive A/C Service: Ideal for diagnosing, charging, and recovering A/C systems on passenger cars, light trucks, and fleet vehicles utilizing R134a and other compatible automotive refrigerants.
• Residential & Light Commercial HVAC/R: Facilitates efficient charging, recovery, and troubleshooting of residential split systems, heat pumps, mini-splits, and light commercial refrigeration and A/C units.
• System Commissioning & Maintenance: Supports critical tasks such as verifying superheat/subcool levels and confirming deep vacuum prior to new installations or during major repair procedures.